406907438 has 16 divisors (see below), whose sum is σ = 698821344. Its totient is φ = 174072480.

The previous prime is 406907437. The next prime is 406907539. The reversal of 406907438 is 834709604.

It is a junction number, because it is equal to n+sod(n) for n = 406907395 and 406907404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406907437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18293 + ... + 33888.

It is an arithmetic number, because the mean of its divisors is an integer number (43676334).

Almost surely, 2^406907438 is an apocalyptic number.

406907438 is a deficient number, since it is larger than the sum of its proper divisors (291913906).

406907438 is a wasteful number, since it uses less digits than its factorization.

406907438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52747.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 406907438 is about 20171.9468073857. The cubic root of 406907438 is about 741.0233212653.

The spelling of 406907438 in words is "four hundred six million, nine hundred seven thousand, four hundred thirty-eight".